How much is a hydrocephalus catheter, imported, adjustable air pressure

We first used the U.S. Johnson anti-siphon, can be adjusted outside the body pressure is about 40,000 yuan, three months after the operation, the drain tube blocked, the second time to use the German Snake self-adjusting pressure of about 10,000 yuan! Don't believe what neuroendoscopy, that is, fistula, this surgery is not very skilled domestic hospitals, and only a few people useful, do not want to be an experiment, then advise you not to do, we have been fooled once!